http://arxiv.org/abs/2204.09671
Motivated by the recently reported anomaly in W boson mass by the CDF collaboration with $7\sigma$ statistical significance, we consider a singlet-doublet (SD) fermion dark matter (DM) model where the required correction to W boson mass arises from radiative corrections induced by DM fermions. While a single generation of SD fermions, odd under an ubroken $Z_2$ symmetry, lead to a tiny parameter space with DM mass near the standard model Higgs resonance which is consistent with DM phenomenology and enhanced W boson mass, two generations of SD fermions lead to a much wider DM parameter space with heavier generation playing the dominant role in W-mass correction. Additionally, such multiple generations of singlet-doublet fermions can also generate light neutrino masses radiatively if a $Z_2$-odd singlet scalar is included.
D. Borah, S. Mahapatra and N. Sahu
Thu, 21 Apr 22
23/73
Comments: N/A
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